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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 32 (1 to 12); 33 (1 to 12); 34 (1 to 12); 35 (1 to 12); 36 (1 to 12); 37 (1 to 10, 11-12); 38 (1 to 12); 39 (1 to 12); 40 (1 to 12); 41 (1 to 10, 11-12); 42 (1 to 12); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (Suppl, 1 to 12); 50 (Suppl, 1 to 12); 51 (1)
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CLOCKSS Archive
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Preserved
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2026-04-13
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32 to 51
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Portico
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Preserved
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2026-04-23
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Preserved : 2007: 32(1-12), 2008: 33(1-12), 2009: 34(1-12), 2010: 35(1-12), 2011: 36(1-12), 2012: 37(1-9, 11-12), 2013: 38(1-7, 10-12), 2014: 39(1-10), 2015: 40(2-12), 2016: 41(1-12), 2017: 42(1-12), 2018: 43(1-12), 2019/2020: 44(1-12), 2020: 45(1-12), 2021: 46(1-12), 2022: 47(1-12), 2023: 48(1-12), 2024: 49(1, S 1, 2-7, 9-12), 2025: 50(1, S 1, 2, S 2, 3-12), 2026: 51(1)
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LOCKSS Archive
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In Progress
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2026-04-13
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37, 44
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LOCKSS Archive
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Preserved
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2026-04-13
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38 to 43
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Library of Congress
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Preserved
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2025-04-07
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42 (10, 11); 43 (1 to 12); 44 (1 to 12); 45 (1 to 12); 46 (1 to 12); 47 (1 to 12); 48 (1 to 12); 49 (1, S1, 2 to 6)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9)
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National Digital Preservation Program, China
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Preserved
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2025-10-23
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Preserved : 4 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11-12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11-12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9); 49 (Suppl 1, 1 to 9, 11, 12)
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National Digital Preservation Program, China
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Preserved
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2025-12-04
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Preserved : 4 (1 to 9, 11, 12); 32 (1 to 9, 11, 12); 33 (1 to 9, 11, 12); 34 (1 to 9, 11, 12); 35 (1 to 9, 11, 12); 36 (1 to 9, 11, 12); 37 (1 to 9, 11-12); 38 (1 to 9, 11, 12); 39 (1 to 9, 11, 12); 41 (1 to 9, 11-12); 42 (1 to 9, 11, 12); 43 (1 to 9, 11, 12); 44 (1 to 9, 11, 12); 45 (1 to 9, 11, 12); 46 (1 to 9, 11, 12); 47 (1 to 9, 11, 12); 48 (1 to 9); 49 (Suppl 1, 1 to 9, 11, 12)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 32 (1-12); 33 (1-12); 34 (1-12); 35 (1-12); 36 (1-12); 37 (1-10, 11-12); 38 (1-7, 9-12); 39 (1-12); 40 (1-12); 41 (1-10, 11-12); 42 (1-12); 43 (1-12); 44 (1-10)
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